228113772 has 48 divisors (see below), whose sum is σ = 561644160. Its totient is φ = 71860608.

The previous prime is 228113723. The next prime is 228113777. The reversal of 228113772 is 277311822.

It is not an unprimeable number, because it can be changed into a prime (228113777) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 118288 + ... + 120200.

It is an arithmetic number, because the mean of its divisors is an integer number (11700920).

Almost surely, 2^228113772 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 228113772, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (280822080).

228113772 is an abundant number, since it is smaller than the sum of its proper divisors (333530388).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

228113772 is a wasteful number, since it uses less digits than its factorization.

228113772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2462 (or 2460 counting only the distinct ones).

The product of its digits is 9408, while the sum is 33.

The square root of 228113772 is about 15103.4357680628. The cubic root of 228113772 is about 611.0130724736.

The spelling of 228113772 in words is "two hundred twenty-eight million, one hundred thirteen thousand, seven hundred seventy-two".